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The interface in carbon-magnesium composites: fibre and matrix effects

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Abstract

Two types of carbon fibres were incorporated into magnesium alloy matrices by squeeze casting. Mechanical testing showed that surface treatment of the fibres led to a marked increase in the interfacial shear strength and a corresponding decrease in the longitudinal tensile strength. A small amount of fine AI4C3 forms at the fibre matrix interface in simple binary Mg-AI matrices. Mg17AI12 and Mg2Si form at the interface in the Mg-AI-Si matrix: precipitation is greatly enhanced by residual stresses at the interface and many fibres are surrounded by a brittle layer leading to inferior mechanical properties.

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Authors and Affiliations

  1. Materials Science Program, Department of Mechanical Engineering, and Center for Composite Materials, University of Delaware, 19716, Newark, Delaware, USA

    I. W. Hall

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  1. I. W. Hall
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Hall, I.W. The interface in carbon-magnesium composites: fibre and matrix effects. J Mater Sci 26, 776–781 (1991). https://doi.org/10.1007/BF03163521

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  • DOI: https://doi.org/10.1007/BF03163521

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